[OpenSIPS-Devel] [OpenSIPS/opensips] 2b7770: [b2b_logic] fix TO hdr setting in UAC entities

[Bogdan Andrei IANCU]

  Branch: refs/heads/3.4
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 2b7770a37f059e2531f0cdc55f3dff7597bf4f30
      https://github.com/OpenSIPS/opensips/commit/2b7770a37f059e2531f0cdc55f3dff7597bf4f30
  Author: Bogdan-Andrei Iancu <bogdan at opensips.org>
  Date:   2023-12-04 (Mon, 04 Dec 2023)

  Changed paths:
    M modules/b2b_logic/logic.c

  Log Message:
  -----------
  [b2b_logic] fix TO hdr setting in UAC entities

Keep the original idea (<=3.1) to have TO and RURI set to the same URI. Starting 3.2 this was accidentally changed, TO hdr being preserved from the UAS entity.
Fixes #3176

(cherry picked from commit d3e3ad118ce57dcf93947e25ed2efe0193286c71)